Import mbedtls-2.16.5

Imports Mbed TLS 2.16.5 from https://github.com/ARMmbed/mbedtls.git
commit 0fce215851cc ("Merge pull request #3053 from
yanesca/bump-version-2.16.5") (tag mbedtls-2.16.5).

Certain files will bever be needed and are thus removed:
 rm -f .gitignore .globalrc .pylintrc .travis.yml
 rm -f CMakeLists.txt DartConfiguration.tcl Makefile
 rm -f include/{.gitignore,CMakeLists.txt}
 rm -f library/{.gitignore,CMakeLists.txt,Makefile}
 rm -rf .git .github configs docs doxygen programs scripts tests visualc

This is a complete overwrite of previous code so earlier changes in the
branch import/mbedtls-2.16.0 will be added on top of this commit to bring
the changes forward.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/lib/libmbedtls/mbedtls/library/sha512.c b/lib/libmbedtls/mbedtls/library/sha512.c
index 396fad5..bdd20b2 100644
--- a/lib/libmbedtls/mbedtls/library/sha512.c
+++ b/lib/libmbedtls/mbedtls/library/sha512.c
@@ -1,8 +1,8 @@
-// SPDX-License-Identifier: Apache-2.0
 /*
  *  FIPS-180-2 compliant SHA-384/512 implementation
  *
  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
  *
  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
  *  not use this file except in compliance with the License.
@@ -224,8 +224,8 @@
     SHA512_VALIDATE_RET( ctx != NULL );
     SHA512_VALIDATE_RET( (const unsigned char *)data != NULL );
 
-#define  SHR(x,n) (x >> n)
-#define ROTR(x,n) (SHR(x,n) | (x << (64 - n)))
+#define  SHR(x,n) ((x) >> (n))
+#define ROTR(x,n) (SHR((x),(n)) | ((x) << (64 - (n))))
 
 #define S0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^  SHR(x, 7))
 #define S1(x) (ROTR(x,19) ^ ROTR(x,61) ^  SHR(x, 6))
@@ -233,15 +233,16 @@
 #define S2(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
 #define S3(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
 
-#define F0(x,y,z) ((x & y) | (z & (x | y)))
-#define F1(x,y,z) (z ^ (x & (y ^ z)))
+#define F0(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
+#define F1(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
 
-#define P(a,b,c,d,e,f,g,h,x,K)                  \
-{                                               \
-    temp1 = h + S3(e) + F1(e,f,g) + K + x;      \
-    temp2 = S2(a) + F0(a,b,c);                  \
-    d += temp1; h = temp1 + temp2;              \
-}
+#define P(a,b,c,d,e,f,g,h,x,K)                                  \
+    do                                                          \
+    {                                                           \
+        temp1 = (h) + S3(e) + F1((e),(f),(g)) + (K) + (x);      \
+        temp2 = S2(a) + F0((a),(b),(c));                        \
+        (d) += temp1; (h) = temp1 + temp2;                      \
+    } while( 0 )
 
     for( i = 0; i < 16; i++ )
     {